Welder Qualification Test (Part 7).
The sequence of actions for the welder’s certification is included below: The main parameters definition; The check of suitability of the equipment and material...
Category: To become an Inspection Engineer
The defects found at the metals macro-analysis.
With the macro-analysis reveal defects that violate the metal continuity: The shrinkholes, gas blowholes, caverns, cracks in cast metal (slabs, moulding); The c...
The hardness measurement. The Rockwell hardness test method and microhardness (Part 2).
Irrespective the Rockwell’s scale which is used, the main process operations of the tests in essence don’t change and are provided below: The prepar...
Welder Qualification Test (Part 6).
It is necessary to clearly understand the difference between the terms «attestation» and «certification» relating to testing for welders. When we say that the w...
The hardness measurement. The Rockwell hardness test method (Part 1).
The method of determining the Rockwell hardness includes numerous embodiments of the same principle as the Brinell, but using indenters with several diameters. ...